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# In the addition table above, each number in the table is the sum of th

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Intern
Joined: 24 Jul 2013
Posts: 29
In the addition table above, each number in the table is the sum of th  [#permalink]

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16 Aug 2018, 06:36
1
7
00:00

Difficulty:

65% (hard)

Question Stats:

58% (02:59) correct 42% (02:19) wrong based on 65 sessions

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In the addition table above, each number in the table is the sum of the terms at the top of its column and the left of its row. If
x + c = 4,
v - b = 2,
a + z = 1,

knowing the value of which of the following variables would be sufficient find the value of x ?

A. n
B. q
C. s
D. v
E. w

Source: Jeff Sackman

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NUS School Moderator
Joined: 18 Jul 2018
Posts: 990
Location: India
Concentration: Finance, Marketing
WE: Engineering (Energy and Utilities)
Re: In the addition table above, each number in the table is the sum of th  [#permalink]

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16 Aug 2018, 07:08
1
From the matrix, we can write V=B+Z.
Given V-B =2. From this Z=2
Also W=C+Z and X+C=4
If we know the value of W, we can find the value of X.
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Status: Learning stage
Joined: 01 Oct 2017
Posts: 1028
WE: Supply Chain Management (Energy and Utilities)
In the addition table above, each number in the table is the sum of th  [#permalink]

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16 Aug 2018, 12:06
longranger25 wrote:
In the addition table above, each number in the table is the sum of the terms at the top of its column and the left of its row. If
x + c = 4,
v - b = 2,
a + z = 1,

knowing the value of which of the following variables would be sufficient find the value of x ?

A. n
B. q
C. s
D. v
E. w

Source: Jeff Sackman

From the table,
x+a=m -----------(1)
x+c=p ------------(2)
z+b=v------------ (3)

Given, x+c=4---(4)
From (1) & (4), p=4.
Given, v-b=2
or, z+b-b=2 (from (3), v=z+b)
or, z=2
Given, a+z=1, so, a=1-2=-1
Now we know the value of a,z, and p.

From the table, we have z+c=w
or, 2+(4-x)=w (from (4), c=4-x)
or, x=6-w.

Therefore, the value of 'w' would be sufficient to find the value of 'x'.

Ans.(E)
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Location: India
Concentration: Strategy, Operations
GPA: 3.95
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Re: In the addition table above, each number in the table is the sum of th  [#permalink]

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20 Aug 2018, 20:54
1
TIP:

These kind of questions fall into the category " BRAINERS" .
And it would be wise to say that if you see such problems in your exam it is better to drop it within 30seconds as these problems are easy but are especially asked to waste our time. So I would suggest drop such problem within 30sec in your GMAT exam.

Posted from my mobile device
Re: In the addition table above, each number in the table is the sum of th   [#permalink] 20 Aug 2018, 20:54
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